Update: Bachmann holds on to slim lead over Graves

With all but one precinct reporting as of 7:30 a.m., Republican Michelle Bachmann still holds a slim lead over DFL Challenger Jim Graves by just more than 1 percent.

With 279 of 280 precincts in, Bachmann had 179,653 for 50.41 percent of the vote to Graves' 175,716 with 49.31 percent.

No further updates have been made available.